source: rtems/bsps/sparc64/include/arch/mm/page.h @ 2afb22b

5
Last change on this file since 2afb22b was 2afb22b, checked in by Chris Johns <chrisj@…>, on Dec 23, 2017 at 7:18:56 AM

Remove make preinstall

A speciality of the RTEMS build system was the make preinstall step. It
copied header files from arbitrary locations into the build tree. The
header files were included via the -Bsome/build/tree/path GCC command
line option.

This has at least seven problems:

  • The make preinstall step itself needs time and disk space.
  • Errors in header files show up in the build tree copy. This makes it hard for editors to open the right file to fix the error.
  • There is no clear relationship between source and build tree header files. This makes an audit of the build process difficult.
  • The visibility of all header files in the build tree makes it difficult to enforce API barriers. For example it is discouraged to use BSP-specifics in the cpukit.
  • An introduction of a new build system is difficult.
  • Include paths specified by the -B option are system headers. This may suppress warnings.
  • The parallel build had sporadic failures on some hosts.

This patch removes the make preinstall step. All installed header
files are moved to dedicated include directories in the source tree.
Let @RTEMS_CPU@ be the target architecture, e.g. arm, powerpc, sparc,
etc. Let @RTEMS_BSP_FAMILIY@ be a BSP family base directory, e.g.
erc32, imx, qoriq, etc.

The new cpukit include directories are:

  • cpukit/include
  • cpukit/score/cpu/@RTEMS_CPU@/include
  • cpukit/libnetworking

The new BSP include directories are:

  • bsps/include
  • bsps/@RTEMS_CPU@/include
  • bsps/@RTEMS_CPU@/@RTEMS_BSP_FAMILIY@/include

There are build tree include directories for generated files.

The include directory order favours the most general header file, e.g.
it is not possible to override general header files via the include path
order.

The "bootstrap -p" option was removed. The new "bootstrap -H" option
should be used to regenerate the "headers.am" files.

Update #3254.

  • Property mode set to 100644
File size: 2.5 KB
Line 
1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 *   notice, this list of conditions and the following disclaimer in the
13 *   documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 *   derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup sparc64mm       
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_sparc64_PAGE_H_
36#define KERN_sparc64_PAGE_H_
37
38#include <arch/mm/frame.h>
39
40/*
41 * On the TLB and TSB level, we still use 8K pages, which are supported by the
42 * MMU.
43 */
44#define MMU_PAGE_WIDTH  MMU_FRAME_WIDTH
45#define MMU_PAGE_SIZE   MMU_FRAME_SIZE
46
47/*
48 * On the page table level, we use 16K pages. 16K pages are not supported by
49 * the MMU but we emulate them with pairs of 8K pages.
50 */
51#define PAGE_WIDTH      FRAME_WIDTH
52#define PAGE_SIZE       FRAME_SIZE
53
54#define MMU_PAGES_PER_PAGE      (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
55
56#ifdef KERNEL
57
58#ifndef __ASM__
59
60#include <arch/interrupt.h>
61
62extern uintptr_t physmem_base;
63
64#define KA2PA(x)        (((uintptr_t) (x)) + physmem_base)
65#define PA2KA(x)        (((uintptr_t) (x)) - physmem_base)
66
67typedef union {
68        uintptr_t address;
69        struct {
70                uint64_t vpn : 51;              /**< Virtual Page Number. */
71                unsigned offset : 13;           /**< Offset. */
72        } __attribute__ ((packed));
73} page_address_t;
74
75extern void page_arch_init(void);
76
77#endif /* !def __ASM__ */
78
79#endif /* KERNEL */
80
81#endif
82
83/** @}
84 */
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